Clamping attachment for tenoning-machines



(No Model) W. H. BENNETT.

GLAMPING ATTACHMENT FOR TENONING MACHINES.

No. 462,526. Patented Nov. 3, 1891.

UNTTED STATES PATENT OFFICE.

\VILLIAM ll. BENNETT, OF CHICAGO, ILLINOIS.

CLAMPING ATTACHMENT FOR TENONING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 462,526, dated November 3, 1891.

Application filed November 18, 1890. Serial No. 371,774- (No model.)

To aZZ whom it may concern.-

Be it known that 1, WILLIAM H. BENNETT, a citizen of the United States, residing at Chicage, in the county of Cook and State of Illinois, have invented a new and usefulImprovement in Clamping Attachments for Tenoning- Machines, of which the following is a specification.

My present invention is of the nature of the improvement set forth in my application for Letters Patent, Serial No. 369,191, filed October 2l,1890; and my object is to provide a simple construction of the clamping attachment and one which will facilitate the adj ustment upon the machine of the timber to be tenoned and permit such adjustment to be readily effected with any of different widths of the timber without requiring to that end previousadjustment of the attachment.

In the accompanying drawings, Figure 1 shows my improved clamping attachment in side elevation, partly broken and sectional, and attached to a bed. Figs. 2 and 3 are sections taken, respectively, on the lines 2 andi) of Fig. l and viewed in the direction of the arrows. Figs. 4: and 5 are perspective views, the former being broken, of details of a modified construction of the attachment. Fig. 0 is a broken sectional detail View, the section being taken at the line 6 of Fig. I.

My improvement relates exclusively to the clamp for attachment to the tenoning-machine, which is well known and therefore not shown in the drawings, the bed of the carriage being merely indicated to illustrate the application of my llllPlOVGlIlQllt.

A denotes the carriage-bed of a tenoningmachine, and B is my improved. clamping attachment,which,as shown in Fig. 1, involves the following construction:

O is a support for the clampingtool employed, and comprises, preferably, an anglearm formed with two branches 0' and g at right angles to each other, the former having a foot 1) at one end, at which it is secured, as by a bolt 0 and nut o, to the bed A, and being also provided, preferably, with a longitudinal slot n, and the latter terminating in a socket-head m. A shaft Z is journaled at one end, where it is provided with a handle 7,; in a bearing 2', having a threaded stem 7 projecting through the slot at and held by a rod or bar h, passed through the socket-head l m and thereon adj ustably held by a setscrew 71 On the shaft Z is supported the clamp proper or clamping-tool D, which is essentially of the nature of aneccentric compressor, and should be shorter than and adjustable lengthwise of the shaft to'adapt it to be readily centered on different widths of work, and the preferred form of which is that of a roller g, journaled in bearings afforded by arms 9, having heads g at which they surround the shaft Z, being adj ustably and rigidly fastened to the latter by set-screws g That part of the shaft between its journals to which the tool D is secured should be angular in crosssection, as represented.

The timber E to be tenoned, as represented in Fig. 3, is applied to the bed A, as usual, the open side of the angle-arm C permitting the timber to be applied laterally'in contradistinction to its endwise insertion, which would be necessary were the attachment B not open at one side of the machine. \Vhen the timber has been brought into place, the shaft Z is adjusted with reference to the thickness thereof by raising or lowering it, as the case may be, through adjustment of the bearing 1' on the branch 0' and of the rod h in the socket-head on, the proximity of the shaft to the work to be such as will permit the clamp 1) to be wedged against it by turning the shaft at the handle 7.1. Then by thus turning the handle the work E is firmly clamped to the bed and ready to be acted on by the cutters of the tenonin'g-machine, the rolling function of the roller g reducing friction to the minimum and thereby enabling a tight clamping effect to be produced without great exertion.

As shown in Figs. 4:, 5, and 6, the sockethead on is supported by an open rectangular ICO 5 secured to the branch g by a threaded bolt or stelnf, Fig. 6, passing through. the slot in the arm h and fastened by a thumb-nut f.

What I claim as new, and desire to secure by Letters Patent, is

1. In a tenoning-lnachine clamp, the combination of a support 0, adapted to be fastened at one end to the carriage-bed of the machine to extend across the said bed over the work E and permit lateral insertion ofthe I 5 Work, a clamping-tool adjust-ably connected .with the said support, and mechanism for operating the clamping-tool, substantially as described.

2. In a tenoning-machine clamp, the combination of a support O, adapted to be fastened at one end to the carriage-bed of the machine to extend across the bed over the work E and permit lateral insertion of the work,- a shaft journaled in bearings on the said support,- aclam ping-tool extending lat erally from the said shaft, and mechanism for operating the clamping-tool, substantially as described.

3. In a tenoning-machine clamp, the combination of a support 0, adapted to be fastened at one end to the carriage-bed of the machine to extend across the bed over the work E and permit lateral insertion of the work, a shaft journaled in bearings on the said support, a clamping-tool extending laterally from the shaft and adjustable longi tudinally thereof, and mechanism for operating the clamping-tool, substantially as described.

4. In atenoning-machine clamp, a support for the clamping-tool adapted to be secured to the carriage-bed of the machine to extend across the bed over the Work E, a shaft j ournale'd in the said support, a clamping-tool comprising a roller 9, journaled in bearings secured to the shaft and adj ustable longitudinally thereof, and mechanism for operating the clam ping-tool, substantially as described.

5. In a tenoning-machine clamp, the combination of a support 0, adapted to be fastened at one end to the carriage-bed of the machine to extend across the bed over the work E and permit lateral insertion of the Work, a shaft journaled in bearings adjustably secured to the said support, a clampingtool D, comprising arms 9', adjustably secured to the shaft, and a roller g, journaledin their free ends, and mechanism for operating the clamping-tool, substantially as described.

6. In a tenoning-machine clamp, the combination of a support C, adapted to be fastened at one end to the carriage-bed of the machine'to extend across the bed over the work E and permit lateral insertion of the work, a shaft l, vertically-adjustable journalbearings" for the shaft, and a clamping-to l on the shaft and adjustable longitudinally thereof, substantially as described.

7. In a tenoning-machine clamp, the combination of an angle-arm 0,- comprising a branch 0", having a foot 19 with which to secure it in place, and a branch g, having a socket at one end, a journal-bearing 2',- adjus-tably secured to the branch 0', a journalbearing" on a support adjustably secured in the said socket on the branch q, a shaftjournaled in the said bearings, a clamping-tool on the shaft and adjustable longitudinally thereof, and mechanism for operating the clamping-tool, substantially as described.

8. A tenoni'ng-machine clamp comprising, in combination, an angle-arm 0, having a branch 4", and a branch q, provided With a socket, a journal-bearing 1', adj ustably secured to the branch r, a bar adj ustably secured in the said socket of the branch q and provided with .a journal-bearing, a shaft Z, journaled in the said bearings and provided with a ban dle it, a clamping-tool D, comprising arms g, adj ustably secured to the shaft and carrying a roller g,- and mechanism for operating the clamping-tool, substantially as described.

I WVILLIAM H. BENNETT.

In presence of J. \V. DYRENFORTH, M. J. FRosT. 

